Pennco 16 Series 1607HSID Cast-Iron Steam Boiler, 225,000 BTU, Natural Gas

The Pennco 1607HSID is a gas-fired cast-iron steam boiler from the 16 Series, sized for larger homes with many radiators. It takes 225,000 BTU/h of natural gas input and carries a net IBR steam rating of 137,000 BTU/h, roughly 571 sq. ft. of EDR.

This is a Category I, chimney-vented residential boiler with electronic ignition. An integral draft diverter keeps the jacket low, and a factory motorized vent damper on the 7 in. flue helps reduce standby losses. The flue connects to a lined masonry chimney or an approved metal chimney. Allow about 5-1/2 in. of extra height for the damper, and reduce input 4% for every 1,000 ft above 2,000 ft of elevation.

Two 2-1/2 in. NPT supply tappings and two matching returns, together with a 6 in. steam chest, simplify building a correct header and equalizer for dry steam. Trim includes an electronic low-water cut-off, a pressure limit control, a 15 psi ASME pop safety valve, a glass water-level gauge and a steam pressure gauge. A propane conversion kit is available for LP sites.

Highlights

• 225,000 BTU/h input with 183,000 BTU/h DOE heating capacity

• Net IBR steam rating of 137,000 BTU/h, about 571 sq. ft. EDR

• 82% AFUE with factory motorized vent damper

• Dual 2-1/2 in. NPT supply and return tappings with a 6 in. steam chest

• Electronic low-water cut-off, pressure limit control and 15 psi ASME safety valve

• Natural gas; propane conversion kit available

Specifications

Good to know

• Gas-fired appliance: it must be installed, vented and commissioned by a qualified installer in line with local codes and the manufacturer's installation manual.